Words which have the same or similar meaning (8)

I believe the answer is:

synonyms

(Other definitions for synonyms that I've seen before include "words such as faith, religion and belief" , "Two words with the same meaning" , "Words with meanings similar to those of others" , "Words that can be interchanged with others" , "Two words that can be interchanged" .)

I've seen this clue in the Sydney Morning Herald.

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